Route
SEA → BZN
Seattle–Tacoma International Airport Bozeman Yellowstone International Airport
How punctual is this route?
- On-time arrivals
- 81.6%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,566
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 48%
- Late-arriving aircraft 22%
- Extreme weather 16%
- Air traffic control & airport 14%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.6% | 137 |
| October 2025 | 85.2% | 123 |
| November 2025 | 89.5% | 98 |
| December 2025 | 81.4% | 162 |
| January 2026 | 80.8% | 146 |
| February 2026 | 87.3% | 118 |
| March 2026 | 85.1% | 117 |
| April 2026 | 84.2% | 95 |
| May 2026 | 79.8% | 124 |
| June 2026 | 82.0% | 150 |
| July 2026 | 71.4% | 154 |
| August 2026 | 71.1% | 142 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| SkyWest Airlines | 937 | 84.2% | 0.2% | 61 min |
| Alaska Airlines | 629 | 77.7% | 0.8% | 56 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO4104
18% late · 255 flights
-
OO4039
17% late · 250 flights
-
AS277
18% late · 165 flights
-
OO3769
6% late · 105 flights
-
OO3736
8% late · 92 flights
-
AS285
29% late · 70 flights
-
AS458
36% late · 70 flights
-
OO3498
38% late · 69 flights
-
OO3703
7% late · 57 flights
-
AS904
24% late · 55 flights
-
AS1030
29% late · 41 flights
-
AS287
11% late · 36 flights
-
AS1359
21% late · 34 flights
-
AS322
15% late · 34 flights
-
AS1539
18% late · 28 flights
-
OO3183
11% late · 28 flights
-
AS553
15% late · 27 flights
-
OO3013
25% late · 24 flights
-
OO3249
30% late · 20 flights
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